//
//  ComposeViewController.swift
//  SinaWeibo
//
//  Created by apple on 15/11/18.
//  Copyright © 2015年 apple. All rights reserved.
//

import UIKit
import SnapKit
import SVProgressHUD

class ComposeViewController: UIViewController {

    
    private lazy var keyBoardView: EmoticonKeyBoardView = EmoticonKeyBoardView {[weak self] (em) -> () in
        self?.textView.insertAttrText(em)
    }
    
    //监听方法
    @objc private func selectPicture() {
        selectorVC.view.snp_updateConstraints { (make) -> Void in
            make.height.equalTo(224 + 80 + 40)
        }
    }
    
    @objc private func selectEmoticon() {
        //如果是默认键盘 键盘的inputView 是nil
        
        //取消第一响应者
        textView.resignFirstResponder()
        //设置输入视图
        textView.inputView = (textView.inputView == nil ? keyBoardView : nil)
        //成为第一响应者
        textView.becomeFirstResponder()
    }
    
    
    @objc private func close() {
        dismissViewControllerAnimated(true, completion: nil)
    }
    
    @objc private func send() {

        guard let token = UserAccountViewModel().token else {
            SVProgressHUD.showErrorWithStatus("客官,您还未登陆哦噢噢噢")
            return
        }
        
        let parmaters = ["access_token": token,"status": textView.fulltext()]
        
        if selectorVC.imageList.count >= 1 {
            //有图片
            let urlString = "https://upload.api.weibo.com/2/statuses/upload.json"
            let imageData = UIImagePNGRepresentation(selectorVC.imageList[0])
            NetworkTools.sharedTools.uploadImage(urlString, parmaters: parmaters, imageData: imageData!, finished: { (result, error) -> () in
                if error != nil {
                    SVProgressHUD.showErrorWithStatus("客官,您还未登陆哦噢噢噢")
                    return
                }
                SVProgressHUD.showSuccessWithStatus("发布Weibo成功")
                self.dismissViewControllerAnimated(true, completion: nil)
            })
        } else {
            
            //没有图片
            let urlString = "2/statuses/update.json"
            NetworkTools.sharedTools.requestJsonDict(.POST, urlString: urlString, parmaters: parmaters) { (result, error) -> () in
                if error != nil {
                    SVProgressHUD.showErrorWithStatus(AppErrorTip)
                    return
                }
                SVProgressHUD.showSuccessWithStatus("发布Weibo成功")
                self.dismissViewControllerAnimated(true, completion: nil)
                print(result)
            }
        }
    }
    
    
    override func viewDidLoad() {
        super.viewDidLoad()
        view.backgroundColor = UIColor.whiteColor()
        
        setupUI()
    }
    
    override func viewDidAppear(animated: Bool) {
        super.viewDidAppear(animated)
        textView.becomeFirstResponder()
    }
    
    
    private func setupUI() {
        setNavBar()
        //设置输入文本
        setupTextView()
        
        setupToolBar()
        
        //添加图片选择控制器视图
        
        
        setSelectorView()
        //注册通知
        registerNotification()
    }
    
    private func setSelectorView() {
        //添加子视图控制器
        addChildViewController(selectorVC)
        //添加视图
        view.addSubview(selectorVC.view)
        
        //调整视图层次结构
        view.bringSubviewToFront(toolBar)
        selectorVC.view.snp_makeConstraints { (make) -> Void in
            make.left.bottom.right.equalTo(view)
            make.height.equalTo(0)
        }
    }
    
    private func registerNotification() {
        //添加通知
        NSNotificationCenter.defaultCenter().addObserver(self, selector: "keyboardWillChange:", name: UIKeyboardWillChangeFrameNotification, object: nil)
    }
    
    //移除通知 
    deinit {
        NSNotificationCenter.defaultCenter().removeObserver(self)
    }
    
    //通知响应方法
    @objc private func keyboardWillChange(n: NSNotification) {
        print(n)
        //获取动画事件
        let duration = n.userInfo![UIKeyboardAnimationDurationUserInfoKey] as! Double
        let rect = (n.userInfo![UIKeyboardFrameEndUserInfoKey] as! NSValue).CGRectValue()
        //动画曲线值 
        let curve = n.userInfo![UIKeyboardAnimationCurveUserInfoKey] as! Int
        //修改 toolBar约束
        //获取键盘高度 
        let offset = -screenH + rect.origin.y
        toolBar.snp_updateConstraints { (make) -> Void in
            make.bottom.equalTo(offset)
        }
        UIView.animateWithDuration(duration) { () -> Void in
            
            //设自动画曲线值 如果设置了这个值 为7 动画持续时间失效
            UIView.setAnimationCurve(UIViewAnimationCurve(rawValue: curve)!)
            //强制刷新
            self.view.layoutIfNeeded()
        }
    }
    
    //懒加载控件
    private lazy var textView: EmoticonTextView = {
        let tv = EmoticonTextView()
        tv.delegate = self
        tv.font = UIFont.systemFontOfSize(18)
        tv.textColor = UIColor.darkGrayColor()
        //设置键盘消失模式
        tv.keyboardDismissMode = UIScrollViewKeyboardDismissMode.OnDrag
        //设置弹簧效果开启
        tv.alwaysBounceVertical = true
        return tv
    }()
    
    private lazy var placeHolderLabel: UILabel = UILabel(title: "分享新鲜事...", size: 18, color: UIColor.lightGrayColor())
    
    //工具条
    private lazy var toolBar: UIToolbar = UIToolbar()
    
    //照片选择器
    private lazy var selectorVC: PictureSelectorViewController = PictureSelectorViewController()

}

extension ComposeViewController: UITextViewDelegate {
    func textViewDidChangeSelection(textView: UITextView) {
        //设置展位文本隐藏 
        placeHolderLabel.hidden = textView.hasText()
        //设置发布按钮的交互
        self.navigationItem.rightBarButtonItem?.enabled = textView.hasText()
        
    }
}




//设置UI
extension ComposeViewController{
    
    //设置底部工具栏
    private func setupToolBar(){
        view.addSubview(toolBar)
        //设置约束
        toolBar.snp_makeConstraints { (make) -> Void in
            make.left.bottom.right.equalTo(view)
            make.height.equalTo(40)
        }
        
        //设置 toolbar的按钮 以及点击事件
        var items = [UIBarButtonItem]()
        
        //添加 UIBarButtonItem
        let itemSettings = [["imageName": "compose_toolbar_picture","actionName": "selectPicture"],
            ["imageName": "compose_mentionbutton_background"],
            ["imageName": "compose_trendbutton_background"],
            ["imageName": "compose_emoticonbutton_background","actionName": "selectEmoticon"],
            ["imageName": "compose_add_background"]]
        
        for dict in itemSettings {
            let item = UIBarButtonItem(imageName: dict["imageName"]!, target: self, actionName: dict["actionName"])
           
            items.append(item)
            //实例化弹簧
            let space = UIBarButtonItem(barButtonSystemItem: .FlexibleSpace, target: nil, action: nil)
            items.append(space)
        }
        
        //删除最后一个弹簧
        items.removeLast()
        
        toolBar.items = items
    }
    
    private func setupTextView() {
        view.addSubview(textView)
//        textView.backgroundColor = UIColor.randomColor()
        
    
        //设置约束
        textView.snp_makeConstraints { (make) -> Void in
            make.top.left.right.equalTo(self.view)
            make.height.equalTo(view.bounds.height / 3)
        }
        
        //添加占位文本
        textView.addSubview(placeHolderLabel)
        placeHolderLabel.snp_makeConstraints { (make) -> Void in
            make.top.equalTo(textView.snp_top).offset(8)
            make.left.equalTo(textView.snp_left).offset(5)
        }
    }
    
    //设置导航条
    private func setNavBar() {
        self.navigationItem.leftBarButtonItem = UIBarButtonItem(title: "关闭", style: .Plain, target: self, action: "close")
        self.navigationItem.rightBarButtonItem = UIBarButtonItem(title: "发布", style: .Plain, target: self, action: "send")
        self.navigationItem.rightBarButtonItem?.enabled = false
        let titleView = UIView(frame: CGRect(x: 0, y: 0, width: 200, height: 40))
        
        navigationItem.titleView = titleView
        
        //添加导航栏 发布信息的UIlabel
        let titleLabel = UILabel(title: "发微博", size: 17, color: UIColor.darkGrayColor())
        let nameLabel = UILabel(title: UserAccountViewModel().userName ?? "", size: 14, color: UIColor.lightGrayColor())
        //添加子视图
        titleView.addSubview(titleLabel)
        titleLabel.addSubview(nameLabel)
        
        //设置约束
        titleLabel.snp_makeConstraints { (make) -> Void in
            make.top.equalTo(titleView.snp_top)
            make.centerX.equalTo(titleView.snp_centerX)
        }
        nameLabel.snp_makeConstraints { (make) -> Void in
            make.bottom.equalTo(titleView.snp_bottom)
            make.centerX.equalTo(titleView.snp_centerX)
        }
        
    }
}
